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The Fundamental Unit of Life — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life1 Mark
MCQ
.......... could be found in both, the nucleus and the cytoplasm:
  • A
    Nucleolus
  • B
    Ribosomes
  • C
    RNA
  • D
    Both B and C
✓

Answer

  1. RNA

Explanation:

RNA is found everywhere- nucleus, nucleolus, mitochondria, chloroplasts, ribosomes, cytoplasm, etc.

RNAs are 3 different types- mRNA, tRNA and rRNA. mRNA and tRNA are found in the cytoplasm and rRNA in the nucleus.

The ribosomes can be free within the cytoplasm of a cell or attached to the endoplasmic reticulum but do not present inside the nucleus.

RNA and ribosomes act together resulting in the synthesis of proteins.

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